:root { color-scheme: light; }
body { margin: 0; background: #f6f7f4; color: #26302a; font: 16px/1.65 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 28px 16px 60px; }
h1 { font-size: 26px; line-height: 1.25; margin: 10px 0 6px; }
h2 { font-size: 18px; margin: 28px 0 6px; }
p, li { color: #3d4840; }
a { color: #2f7a55; }
.todo { background: #fff2cc; padding: 1px 5px; border-radius: 4px; font-weight: 600; }
.back { font-size: 14px; }
.small { font-size: 13px; color: #6b746d; }